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A Davis-Rutan Production. The Hypocycloid. A Sordid Tale of an Industrious Roulette. The Family. Roulette- A roulette is the curve traced by a fixed point on a closed convex curve as that curve rolls without slipping along a second curve.Trochoid- A subclass of roulettes, a trochoid is a case where
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1. Intelligent Design Works presents